CN102951708A - Multielement catalysis iron-carbon micro-electrolysis filler and preparation method thereof - Google Patents
Multielement catalysis iron-carbon micro-electrolysis filler and preparation method thereof Download PDFInfo
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Abstract
The invention discloses multielement catalysis iron-carbon micro-electrolysis filler and a preparation method thereof. The multielement catalysis iron-carbon micro-electrolysis filler mainly comprises 55-75 parts of iron powder, 10-30 parts of active carbon powder, 5-20 parts of nonferrous metal powder catalyst A, 5-10 parts of nonferrous metal powder catalyst B and 5-10 parts of inorganic catalyst C. The preparation method comprises the steps of weighing, extruding, primary moulding and high-temperature sintering. The invention has the advantages that the multielement catalysis iron-carbon micro-electrolysis filler disclosed by the invention overcomes the defects that the traditional scrap iron is hardened easily and generated sludge is tripled or quadrupled after reaction because reaction speed cannot be controlled when micro cell reactions are excessive, iron-carbon micro cell potential difference is enlarged, reaction speed is higher, reaction ratio can be controlled, contact ratio of pollutant to a micro cell is tripled, sewage oxidation treatment efficiency is doubled or tripled, no hardening is caused as iron atoms are not in direct contact, and the filler does not need to be replaced or regenerated.
Description
Technical field
The present invention relates to a kind of iron-carbon micro-electrolysis filler, specifically a kind of multiple catalyzing iron-carbon micro-electrolysis filler and preparation method thereof belongs to the iron-carbon micro-electrolysis filler field.
Background technology
Micro electrolysis tech is a kind of ideal technology of processing at present high concentrated organic wastewater, claims again internal electrolysis.It is in cold situation, utilizes the micro-electrolysis material self that is filled in the waste water to produce the 1.2V potential difference waste water is carried out electrolysis treatment, to reach the purpose of degradable organic pollutant.After system's water flowing, can form countless microbattery systems in the equipment, consist of an electric field at its action space.The nascent state that in treating processes, produces [H], Fe
2+Deng can with waste water in many component generation redox reactions, such as can damaged colored chromophoric group or the auxochrome group of coloring matter in the waste water, even chain rupture reaches the effect of degradation and decolorization; The Fe that generates
2+Further be oxidized to Fe
3+Their hydrate has stronger absorption-flocculation activity, particularly after adding the adjusting PH with base value, generate ferrous hydroxide and ferric hydroxide colloid flocculation agent, their adsorptive power is higher than the ferric hydroxide colloid that general medicament hydrolysis obtains far away, the molecule, metallics and the organic macromolecule that disperse in the planar water in a large number.
The micro-electrolysis material that adopts of little electrolysis process is generally iron filings and charcoal traditionally, to add the soda acid activation before using, being easy to passivation in the process of using hardens, again because iron and charcoal are physical contacts, between be easy to form sealing coat little electrolysis can not be proceeded and ineffective, this has caused changing continually micro-electrolysis material, and not only the large cost height of workload also affects treatment effect and the efficient of waste water.In addition, traditional micro-electrolysis material surface-area is too little also so that wastewater treatment needs long time, has increased ton water cost of investment, and this has all had a strong impact on utilization and the popularization of little electrolysis process.
Summary of the invention
In order to address the above problem, the present invention has designed a kind of multiple catalyzing iron-carbon micro-electrolysis filler and preparation method thereof, under the multiple catalyzing of two kinds of nonferrous metal powders and organic catalyst, the Trinitarian microbattery of--non-ferrous metal--gac group that formed iron, iron carbon microbattery potential difference is increased, speed of response is faster, and reaction ratio is controlled, pollutent contacts ratio and increases three times with microbattery, the sewage oxidation processing efficiency increases 2-3 doubly, because no longer directly contact between the iron atom, so no longer form the phenomenon that hardens, need not to change or regeneration filler, the preparation method is simple.
Technical scheme of the present invention is:
A kind of multiple catalyzing iron-carbon micro-electrolysis filler, described filler mainly is grouped into by the one-tenth of following mass parts:
Iron powder 55-75 part, activity charcoal powder 10-30 part, nonferrous metal powder catalyst A 5-20 part, nonferrous metal powder catalyst B 5-10 part and organic catalyst C 5-10 part;
Preferably, 65 parts of iron powders, 20 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C are 5 parts;
Preferably, 68 parts of iron powders, 14 parts of activity charcoal powders, 8 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C are 5 parts;
Wherein, described ferrous powder granules diameter is the 60-120 order, is preferably 70 orders;
Described activity charcoal powder particle diameter is the 100-160 order, is preferably 110 orders;
The particle diameter of described nonferrous metal powder catalyst A is the 100-140 order, is preferably 120 orders;
The particle diameter of described nonferrous metal powder catalyst B is the 100-140 order, is preferably 120 orders;
The particle diameter of described organic catalyst C is the 80-120 order, is preferably 90 orders;
Described nonferrous metal powder catalyst A comprises aluminium, copper or palladium etc., is preferably palladium or copper;
Described nonferrous metal powder catalyst B comprises titanium, rhodium or zinc etc., preferred titanium or zinc;
Described organic catalyst C comprises carbonate, silicate or borate, is preferably silicate or borate.
Further, described multiple catalyzing iron-carbon micro-electrolysis filler also contains binding agent, and described binding agent is the black earth binding agent, and described binding agent accounts for the 5-10% of described filler gross weight.
The preparation method of above-mentioned multiple catalyzing iron-carbon micro-electrolysis filler may further comprise the steps:
(1) according to each component of aforementioned proportion weighing;
(2) load weighted each component is mixed, depress to ellipse at the pressure of roller bearing pressing machine 250KN;
(3) one-step forming at the beginning of drying 24 hours under temperature 30-80 ℃;
(4) filled under the nitrogen condition sintering 4-6 hour at high temperature 850-1050 ℃, the cooling aftershaping gets final product.
The invention has the advantages that: multiple catalyzing iron-carbon micro-electrolysis filler of the present invention has solved traditional iron filings and has easily hardened, and microbattery reacts excessive uncontrollable speed of response and causes reacting rear mud and increases by three or four times drawback, simultaneously under the multiple catalyzing of two kinds of nonferrous metal powders and organic catalyst,--non-ferrous metal (organic catalyst)--Trinitarian microbattery of gac group that formed iron, reduced the contact resistance between the iron carbon, the maximum potential of bringing into play to greatest extent between the iron carbon is poor, actual electrical potential difference after iron carbon microbattery contacts is increased, speed of response is faster, and reaction ratio is controlled, pollutent and microbattery pick out ratio and increase three times, the sewage oxidation processing efficiency increases 2-3 doubly, because no longer directly contact between the iron atom, so no longer form the phenomenon that hardens, need not to change or regeneration filler.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
Except as otherwise noted, the percentage ratio that adopts among the present invention is weight percentage.
Embodiment 1
A kind of multiple catalyzing iron-carbon micro-electrolysis filler, described filler mainly is grouped into by the one-tenth of following mass parts:
5 parts of 70 parts of iron powders, 10 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 10 parts of nonferrous metal powder catalyst B and organic catalyst C;
Wherein, described ferrous powder granules diameter is 120 orders;
Described activity charcoal powder particle diameter is 100 orders;
The particle diameter of described nonferrous metal powder catalyst A is 100 orders;
The particle diameter of described nonferrous metal powder catalyst B is 140 orders;
The particle diameter of described organic catalyst C is 80 orders;
Described nonferrous metal powder catalyst A is aluminium;
Described nonferrous metal powder catalyst B comprises titanium;
Described organic catalyst C comprises carbonate.
Embodiment 2
A kind of multiple catalyzing iron-carbon micro-electrolysis filler, described filler mainly is grouped into by the one-tenth of following mass parts:
5 parts of 58 parts of iron powders, 12 parts of activity charcoal powders, 15 parts of nonferrous metal powder catalyst A, 10 parts of nonferrous metal powder catalyst B and organic catalyst C
Wherein, described ferrous powder granules diameter is 70 orders;
Described activity charcoal powder particle diameter is 110 orders;
The particle diameter of described nonferrous metal powder catalyst A is 130 orders;
The particle diameter of described nonferrous metal powder catalyst B is 140 orders;
The particle diameter of described organic catalyst C is 80 orders;
Described nonferrous metal powder catalyst A is copper;
Described nonferrous metal powder catalyst B is rhodium;
Described organic catalyst C comprises silicate.
Embodiment 3
A kind of multiple catalyzing iron-carbon micro-electrolysis filler, described filler mainly is grouped into by the one-tenth of following mass parts:
5 parts of 68 parts of iron powders, 14 parts of activity charcoal powders, 8 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C;
Wherein, described ferrous powder granules diameter is 70 orders;
Described activity charcoal powder particle diameter is 110 orders;
The particle diameter of described nonferrous metal powder catalyst A is 110 orders;
The particle diameter of described nonferrous metal powder catalyst B is 100;
The particle diameter of described organic catalyst C is 80 orders;
Described nonferrous metal powder catalyst A is palladium;
Described nonferrous metal powder catalyst B is zinc zinc;
Described organic catalyst C is borate.
Embodiment 4
A kind of multiple catalyzing iron-carbon micro-electrolysis filler, described filler mainly is grouped into by the one-tenth of following mass parts:
5 parts of 65 parts of iron powders, 20 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C.
Wherein, described ferrous powder granules diameter is 70 orders;
Described activity charcoal powder particle diameter is 110 orders;
The particle diameter of described nonferrous metal powder catalyst A is 100 orders;
The particle diameter of described nonferrous metal powder catalyst B is 100;
The particle diameter of described organic catalyst C is 80;
Described nonferrous metal powder catalyst A is copper;
Described nonferrous metal powder catalyst B is zinc;
Described organic catalyst C is silicate.
Embodiment 5
A kind of multiple catalyzing iron-carbon micro-electrolysis filler, described filler mainly is grouped into by the one-tenth of following mass parts:
5 parts of 55 parts of iron powders, 10 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C;
Wherein, described ferrous powder granules diameter is 60;
Described activity charcoal powder particle diameter is 100;
The particle diameter of described nonferrous metal powder catalyst A is 100;
The particle diameter of described nonferrous metal powder catalyst B is 100;
The particle diameter of described organic catalyst C is 80;
Described nonferrous metal powder catalyst A is aluminium
Described nonferrous metal powder catalyst B is titanium;
Described organic catalyst C is carbonate.
Embodiment 6
A kind of multiple catalyzing iron-carbon micro-electrolysis filler, described filler mainly is grouped into by the one-tenth of following mass parts:
10 parts of 75 parts of iron powders, 30 parts of activity charcoal powders, 20 parts of nonferrous metal powder catalyst A, 10 parts of nonferrous metal powder catalyst B and organic catalyst C;
Wherein, described ferrous powder granules diameter is 120 orders;
Described activity charcoal powder particle diameter is 160 orders;
The particle diameter of described nonferrous metal powder catalyst A is 140 orders;
The particle diameter of described nonferrous metal powder catalyst B is 140 orders;
The particle diameter of described organic catalyst C is 120 orders;
Described nonferrous metal powder catalyst A is palladium;
Described nonferrous metal powder catalyst B is rhodium;
Described organic catalyst C is borate.
Embodiment 7
A kind of preparation method of multiple catalyzing iron-carbon micro-electrolysis filler, be that 80-120 purpose non-ferrous metal powder A and particle diameter are 100-140 purpose non-ferrous metal powder B with 55-75 purpose primary particle shape iron powder and particle diameter at first, in the ratio mix and blend of mass parts 55-75 ︰ 5-20 ︰ 5-10 30 minutes, make it even mixing, then add 100-160 purpose Powdered Activated Carbon 10-30 part, mix and blend 20 minutes, adding at last particle diameter 80-120 purpose organic catalyst C 5-10 part stirred 20 minutes, make metal-powder catalyzer and organic catalyst evenly be enclosed in around the iron powder, 5-10% by above total mass adds the black earth binding agent, send into the roller bearing pressing machine after mixing, depress to 2 * 1.5 centimetres oval ball at the pressure of 250-350KN.Dried under field conditions (factors) 72 hours or the 30-80 degrees celsius under oven dry 24 hours, then in the retort furnace of inflated with nitrogen sintering 4-6 hour, stand-by after naturally lowering the temperature 24 hours.
Experiment effect compares:
The described electrolysis filler of above-described embodiment 1-6 exists: iron carbon microbattery potential difference, speed of response raising ratio, color removal ratio, pollutent contact testing of the aspects such as ratio, sewage oxidation processing efficiency (COD removes ratio %) with microbattery, and compare with traditional electrolysis filler, other condition is identical, the results are shown in following table:
| ? | Iron carbon microbattery potential difference (V) | Speed of response improves ratio (%) | Color removal ratio (%) | Dye thing and contact ratio with microbattery | Sewage oxidation processing efficiency (COD removes ratio %) |
| Embodiment 1 | 1.18 | 25.00 | 97.50 | 92.00 | 44.00 |
| Embodiment 2 | 1.19 | 25.50 | 98.00 | 91.00 | 45.00 |
| Embodiment 3 | 1.17 | 24.40 | 95.5 | 90.00 | 43.20 |
| Embodiment 4 | 1.16 | 23.70 | 94.20 | 93.00 | 42.70 |
| Embodiment 5 | 1.19 | 26.40 | 94.50 | 91.00 | 46.60 |
| Embodiment 6 | 1.17 | 28.40 | 96.50 | 93.00 | 47.50 |
Can find out by upper table, multiple catalyzing iron-carbon micro-electrolysis filler of the present invention has solved traditional iron filings and has easily hardened, and microbattery reacts excessive uncontrollable speed of response and causes reacting rear mud and increases by three or four times drawback, simultaneously under the multiple catalyzing of two kinds of nonferrous metal powders and organic catalyst,--non-ferrous metal (organic catalyst)--Trinitarian microbattery of gac group that formed iron, iron carbon microbattery potential difference is increased, speed of response is faster, and reaction ratio is controlled, pollutent contacts ratio and increases three times with microbattery, the sewage oxidation processing efficiency increases 2-3 doubly, because no longer directly contact between the iron atom, so no longer form the phenomenon that hardens, need not to change or regeneration filler, although and above 6 routine embodiment effects slightly have any different and all reached good treatment effect.
Among each embodiment of the present invention, used chemical industry material is used material in the production of this area, all can obtain from market, and can not exert an influence for the production result;
The various device that adopts among the present invention is the conventional equipment that uses in the production technique of this area, and operation of each equipment, parameter etc. all carry out according to routine operation, there is no special feature.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. multiple catalyzing iron-carbon micro-electrolysis filler, it is characterized in that: described filler mainly is grouped into by the one-tenth of following mass parts:
Iron powder 55-75 part, activity charcoal powder 10-30 part, nonferrous metal powder catalyst A 10-30 part, nonferrous metal powder catalyst B 5-10 part and organic catalyst C 5-10 part;
Wherein, described ferrous powder granules diameter is the 60-120 order;
Described activity charcoal powder particle diameter is the 100-160 order;
The particle diameter of described nonferrous metal powder catalyst A is the 100-140 order;
The particle diameter of described nonferrous metal powder catalyst B is the 100-140 order;
The particle diameter of described organic catalyst C is the 80-120 order;
Described nonferrous metal powder catalyzer is aluminium, copper or palladium;
Described nonferrous metal powder catalyst B is titanium or rhodium;
Described organic catalyst C is carbonate, silicate or borate.
2. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1 is characterized in that, described filler mainly is grouped into by the one-tenth of following mass parts:
5 parts of 65 parts of iron powders, 20 parts of activity charcoal powders, 5 parts of nonferrous metal powder catalyst A, 5 parts of nonferrous metal powder catalyst B and organic catalyst C.
3. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, it is characterized in that: described ferrous powder granules diameter is 70 orders.
4. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, it is characterized in that: described activity charcoal powder particle diameter is 110 orders.
5. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, it is characterized in that: the particle diameter of described nonferrous metal powder catalyst A is 120 orders.
6. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, it is characterized in that: the particle diameter of described nonferrous metal powder catalyst B is 120 orders.
7. multiple catalyzing iron-carbon micro-electrolysis filler according to claim 1, it is characterized in that: the particle diameter of described organic catalyst C is 90 orders.
8. the preparation method of a multiple catalyzing iron-carbon micro-electrolysis filler as claimed in claim 1 is characterized in that, may further comprise the steps:
(1) according to each component of aforementioned proportion weighing;
(2) load weighted each component is mixed, depress to ellipse at the pressure of roller bearing pressing machine 250KN;
(3) one-step forming at the beginning of drying 24 hours under temperature 30-80 ℃;
(4) filled under the nitrogen condition sintering 4-6 hour at high temperature 850-1050 ℃, the cooling aftershaping gets final product.
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